Inverter inductance box and photovoltaic inverter

Abstract

The utility model is suitable for the technical field of photovoltaic inverters, and especially relates to an inverter inductance box and a photovoltaic inverter. The inverter inductance box comprises a shell and a partition plate, the shell is provided with a containing cavity extending in the length direction of the shell, the partition plate is arranged on the cavity wall of the containing cavity, the partition plate extends in the length direction of the shell, and in the length direction of the shell, the partition plate divides the containing cavity into a first cavity body and a second cavity body which are arranged side by side; the first cavity is internally provided with a plurality of first mounting grooves, the plurality of first mounting grooves are arranged at intervals along the length direction of the first cavity, the second cavity is internally provided with a plurality of second mounting grooves, the plurality of second mounting grooves are arranged at intervals along the length direction of the second cavity, and the first mounting grooves and the second mounting grooves are both used for mounting inductors. The inverter inductor box can accommodate a plurality of inductors and has a relatively small length dimension. Therefore, the production cost of the inverter inductance box is reduced, and the occupied space of the inverter inductance box on the photovoltaic inverter is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaic inverters, and particularly relates to an inductor box for an inverter and a photovoltaic inverter. Background Technique

[0002] A photovoltaic inverter is one of the core devices in a photovoltaic system. It is used to connect photovoltaic panels and the power grid or other loads. Its main function is to convert the direct current generated by the photovoltaic panels into alternating current suitable for use in the power grid or household appliances. A photovoltaic inverter usually includes a box body and an inductor installed in the box body. The inductor is mainly used for filtering, energy storage, and smoothing the current in the photovoltaic inverter. However, the inductor generates a lot of heat during operation, causing the temperature of the inductor component to rise. If the heat dissipation is not timely, it will cause the inductor component and surrounding devices to be damaged due to heat.

[0003] In the existing technology, an inductor box is usually designed to install the inductor in the inductor box for protection, and the inductor box has good heat dissipation performance and can dissipate heat from the inductor in a timely manner. However, the number of inductors that the inductor box can accommodate is small. When multiple inductors need to be installed, multiple inductor boxes are usually arranged and installed on the side of the box body of the photovoltaic inverter, or multiple inductors are installed in one inductor box to meet the installation of multiple inductors. However, multiple inductor boxes will occupy a large installation space in the box body, which will interfere with the installation of other components in the photovoltaic inverter. Or when multiple inductors are installed in one inductor box, the length dimension of the inductor box is large, and the box body needs to have a large size, increasing the production cost of the photovoltaic inverter. And installing multiple inductor boxes reduces the installation convenience of the inductor box. Summary of the Utility Model

[0004] An embodiment of the utility model provides an inductor box for an inverter, aiming to reduce the occupied space of the inductor box for the inverter on the photovoltaic inverter and increase the number of inductors that the inductor box for the inverter can accommodate.

[0005] An embodiment of the utility model is implemented as follows. An inductor box for an inverter includes:

[0006] A housing having a receiving cavity extending along the length direction of the housing;

[0007] A partition plate provided on the cavity wall of the receiving cavity. The partition plate extends along the length direction of the housing. In the length direction of the housing, the partition plate divides the receiving cavity into a first cavity and a second cavity arranged side by side;

[0008] The housing further includes a plurality of first mounting grooves and a plurality of second mounting grooves provided in the accommodation cavity. The plurality of first mounting grooves are provided in the first cavity and are arranged at intervals along the length direction of the first cavity. The plurality of second mounting grooves are provided in the second cavity and are arranged at intervals along the length direction of the second cavity. Both the first mounting grooves and the second mounting grooves are used for mounting inductors.

[0009] Furthermore, the inverter inductor box further includes a plurality of reinforcing ribs provided at the bottom of the partition plate, and the plurality of reinforcing ribs connect the first cavity and the second cavity.

[0010] Furthermore, the inverter inductor box further includes a heat dissipation member provided on the side surface of the housing.

[0011] Furthermore, the heat dissipation member is configured as a plurality of heat dissipation teeth provided at the bottom of the housing and annularly provided around the circumference of the housing.

[0012] Furthermore, ventilation grooves are formed between the plurality of heat dissipation teeth at the bottom of the housing, and the ventilation grooves are formed between the outer side walls adjacent to the first cavity and the second cavity, and the bottom wall of the ventilation grooves is configured as the bottom of the partition plate.

[0013] Furthermore, thermal conductive glue is provided in both the first cavity and the second cavity, and the thermal conductive glue is used to fill the gaps between the cavity walls of the first cavity and the second cavity and the inductor.

[0014] Furthermore, at the upper end of the housing, the housing is provided with a mounting opening communicating with the accommodation cavity, and a third mounting groove is annularly provided along the circumference of the mounting opening, and a sealing member is installed in the third mounting groove.

[0015] An embodiment of the present invention further provides a photovoltaic inverter, including:

[0016] A box body;

[0017] The aforementioned inverter inductor box, and the inverter inductor box is detachably installed on the box body.

[0018] Furthermore, a plurality of first connection holes are provided in the mounting opening, and a plurality of second connection holes are provided in the box body. One first connection hole corresponds to one second connection hole, and both the first connection holes and the second connection holes are used for screws to pass through. The screws sequentially pass through the second connection holes and the first connection holes to connect the box body and the inverter inductor box.

[0019] Furthermore, a plurality of positioning pins are provided on both the mounting opening and the partition plate, and a plurality of positioning holes for the positioning pins to pass through are provided in the box body, and one positioning pin correspondingly passes through one positioning hole.

[0020] In the inverter inductor box of the present utility model, the partition plate divides the accommodating cavity into a first cavity and a second cavity. A plurality of first mounting grooves are arranged at intervals along the length direction of the first cavity in the first cavity, and a plurality of second mounting grooves are arranged at intervals along the length direction of the second cavity in the second cavity. A plurality of inductors are installed in the plurality of first mounting grooves and the plurality of second mounting grooves, enabling the inverter inductor box to accommodate a plurality of inductors, increasing the number of inductors that the inverter inductor box can accommodate. Moreover, the plurality of first cavities and the second cavity are arranged side by side in the length direction of the housing, reducing the length dimension of the housing, so that while the inverter inductor box can accommodate a plurality of inductors, it has a smaller length dimension. Thereby, the production cost of the inverter inductor box is reduced, and the occupied space of the inverter inductor box on the photovoltaic inverter is reduced. Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of the inverter inductor box provided by an embodiment of the present utility model;

[0022] Figure 2 is a schematic structural diagram of the inverter inductor box with inductors installed provided by an embodiment of the present utility model;

[0023] Figure 3 is a schematic bottom view structural diagram of the inverter inductor box provided by an embodiment of the present utility model

[0024] Figure 4 is a schematic front view structural diagram of the inverter inductor box provided by an embodiment of the present utility model

[0025] Figure 5 is a schematic structural diagram of the photovoltaic inverter provided by an embodiment of the present utility model

[0026] Figure 6 is a schematic structural diagram of the photovoltaic inverter with the inverter inductor box removed provided by an embodiment of the present utility model.

[0027] Description of the Reference Numerals: 100, housing; 110, accommodating cavity; 111, first cavity; 112, second cavity; 120, first mounting groove; 130, second mounting groove; 140, ventilation groove; 150, mounting opening; 160, third mounting groove; 170, first connection hole; 200, partition plate; 300, heat dissipation teeth; 400, seal; 500, positioning pin; 600, box body; 610, second connection hole; 620, positioning hole; 700, inductor; 800, reinforcing rib; 900, thermal conductive adhesive. Detailed Embodiment

[0028] In order to make the objectives, technical solutions and advantages of the present utility model more clearly understood, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0029] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated in the description of the orientation and positional relationship is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0030] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0031] The following disclosure provides many different embodiments or examples for implementing different structures of the present utility model. To simplify the disclosure of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present utility model. In addition, the present utility model may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present utility model provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0032] In the existing technology, an inductor box is usually designed to house the inductor in the inductor box for protection, and the inductor box has good heat dissipation performance and can dissipate heat from the inductor in a timely manner. However, the number of inductors that the inductor box can accommodate is small. When multiple inductors need to be installed, multiple inductor boxes are usually arranged and installed on the side of the box body of the photovoltaic inverter, or multiple inductors are installed in one inductor box to meet the installation of multiple inductors. However, multiple inductor boxes will occupy a large installation space in the box body, which will interfere with the installation of other components in the photovoltaic inverter. Or when multiple inductors are installed in one inductor box, the length dimension of the inductor box is large, and the box body needs to have a large size, which increases the production cost of the photovoltaic inverter. And installing multiple inductor boxes reduces the installation convenience of the inductor box. Therefore, this application proposes an inverter inductor box, aiming to reduce the occupied space of the inverter inductor box on the photovoltaic inverter and increase the number of inductors that the inverter inductor box can accommodate.

[0033] Please refer to Figures 1 to 3 , this application proposes an inverter inductor box, which is applied to be installed on a photovoltaic inverter. The inverter inductor box includes a housing 100 and a partition plate 200. The housing 100 has a receiving cavity 110 extending along the length direction of the housing 100. The partition plate 200 is disposed on the cavity wall of the receiving cavity 110 and extends along the length direction of the housing 100. In the length direction of the housing 100, the partition plate 200 divides the receiving cavity 110 into a first cavity 111 and a second cavity 112 arranged side by side. The housing 100 further includes a plurality of first mounting grooves 120 and a plurality of second mounting grooves 130 disposed in the receiving cavity 110. The plurality of first mounting grooves 120 are disposed in the first cavity 111 and are arranged at intervals along the length direction of the first cavity 111. The plurality of second mounting grooves 130 are disposed in the second cavity 112 and are arranged at intervals along the length direction of the second cavity 112. Both the first mounting grooves 120 and the second mounting grooves 130 are used for mounting inductors 700.

[0034] Thus, the partition plate 200 divides the accommodation cavity 110 into a first cavity 111 and a second cavity 112. A plurality of first mounting grooves 120 are arranged at intervals along the length direction of the first cavity 111 in the first cavity 111, and a plurality of second mounting grooves 130 are arranged at intervals along the length direction of the second cavity 112 in the second cavity 112. A plurality of inductors 700 are installed in the plurality of first mounting grooves 120 and the plurality of second mounting grooves 130. Compared with a general inverter inductor box, the inverter inductor box can accommodate more inductors 700, increasing the number of inductors 700 that the inverter inductor box can accommodate. And the plurality of first cavities 111 and the second cavity 112 are arranged side by side in the length direction of the housing 100, reducing the length dimension of the housing 100. While the inverter inductor box can accommodate a plurality of inductors 700, it has a smaller length dimension compared with a general inverter inductor box. Thereby reducing the production cost of the inverter inductor box and reducing the occupied space of the inverter inductor box on the photovoltaic inverter.

[0035] It is worth noting that the thickness of the partition plate 200 is greater than the thickness of the cavity walls of the first cavity 111 and the second cavity 112, enhancing the structural strength of the partition plate 200, making it not easy for the partition plate 200 to shift or bend, ensuring the relative independence of the first cavity 111 and the second cavity 112, and reducing the damage to the inductors 700 in the first cavity 111 and the second cavity 112.

[0036] Optionally, in an embodiment, the inverter inductor box further includes a plurality of reinforcing ribs 800 provided at the bottom of the partition plate 200, and the plurality of reinforcing ribs 800 connect the first cavity 111 and the second cavity 112.

[0037] Thus, a plurality of reinforcing ribs 800 are provided at the bottom of the partition plate 200, and the reinforcing ribs 800 connect the first cavity 111 and the second cavity 112 to enhance the connection stability between the first cavity 111 and the second cavity 112, reducing the possibility of deformation or fracture due to stress between the first cavity 111 and the second cavity 112, thereby enhancing the overall structural strength of the housing 100. And the reinforcing ribs 800 are provided at the bottom of the partition plate 200, enhancing the connection stability of the partition plate 200 in the accommodation cavity 110 and reducing the possibility of the partition plate 200 shifting.

[0038] Optionally, in another embodiment, there are various ways to enhance the structural strength of the housing 100. The thickness of the bottom wall of the accommodation cavity 110 can also be increased to enhance the overall structural strength of the inverter inductor box.

[0039] Optionally, in an embodiment, the inverter inductor box further includes a heat dissipation member provided on the side of the housing 100.

[0040] Thus, in order to meet the heat dissipation requirements of the inductor 700 within the inverter inductor box, a heat dissipation component is provided on the side surface of the housing 100 to dissipate heat from the inductor 700 within the inverter inductor box, thereby reducing the likelihood of the inductor 700 being damaged by overheating due to the inability to dissipate heat in a timely manner.

[0041] Optionally, in one embodiment, the heat dissipation component is configured as a plurality of heat dissipation teeth 300 provided at the bottom of the housing 100 and annularly arranged around the periphery of the housing 100.

[0042] Thus, since the heat dissipation teeth 300 can increase the contact area with the outside air, a plurality of heat dissipation teeth 300 are provided both at the bottom of the housing 100 and around the periphery of the housing 100, increasing the contact area between the periphery and the bottom of the housing 100 and the outside air. Thereby, the rate of heat transfer from the heat generated by the inductor 700 within the accommodation cavity 110 to the outside of the housing 100 is accelerated, and the heat dissipation efficiency of the inverter inductor box for the inductor 700 is improved. It is beneficial to more quickly reduce the temperatures of the housing 100 and the inductor 700, and reduce the likelihood of the inductor 700 and other components of the photovoltaic inverter being damaged by overheating due to the inability of the heat within the inductor 700 and the housing 100 to be dissipated in a timely manner.

[0043] Optionally, in another embodiment, the heat dissipation teeth 300 can be arranged in various forms, and the heat dissipation teeth 300 at the bottom of the housing 100 can also be omitted to reduce the development cost of the housing 100, as long as the heat dissipation function for the inductor 700 can be satisfied.

[0044] Optionally, in one embodiment, please refer to Figure 4 , a ventilation groove 140 is formed between a plurality of the heat dissipation teeth 300 at the bottom of the housing 100. The ventilation groove 140 is formed between the outer sidewalls adjacent to the first cavity 111 and the second cavity 112, and the bottom wall of the ventilation groove 140 is configured as the bottom of the partition plate 200.

[0045] Thus, a ventilation groove 140 is formed between a plurality of the heat dissipation teeth 300 at the bottom of the housing 100, increasing the contact area between the housing 100 and the outside air. And the ventilation groove 140 is formed between the outer sidewalls adjacent to the first cavity 111 and the second cavity 112, forming a ventilation area at the bottom of the housing 100 to increase the contact area between the sidewalls adjacent to the first cavity 111 and the second cavity 112 and the outside air. So that more cold air can flow through the ventilation groove 140, thereby accelerating the heat exchange rate between the heat generated by the inductor 700 within the accommodation cavity 110 and the outside air, which is beneficial to more quickly reduce the temperatures of the housing 100 and the inductor 700, and further improving the heat dissipation efficiency of the inverter inductor box.

[0046] Optionally, in one embodiment, thermal conductive glue 900 is provided in both the first cavity 111 and the second cavity 112. The thermal conductive glue 900 is used to fill the gap between the cavity walls of the first cavity 111 and the second cavity 112 and the inductor 700.

[0047] In this way, thermal conductive glue 900 is coated in both the first cavity 111 and the second cavity 112. On the one hand, the thermal conductive glue 900 abuts against the bottom of the inductor 700, reducing the gap between the inductor 700 and the bottom wall of the receiving cavity 110. Moreover, the thermal conductive glue 900 has good thermal conductivity, enabling the heat generated by the inductor 700 to be conducted to the housing 100 in a timely manner and perform heat exchange with the air outside the housing 100, thereby improving the heat dissipation efficiency of the inductor 700. On the other hand, the thermal conductive glue 900 can also bond the inductor 700 to the bottom wall of the receiving cavity 110, improving the installation stability of the inductor 700 in the receiving cavity 110 and making the inductor 700 less likely to shift or detach.

[0048] Optionally, in one embodiment, at the upper end of the housing 100, the housing 100 is provided with an installation opening 150 communicating with the receiving cavity 110. A third installation groove 160 is circumferentially provided along the periphery of the installation opening 150, and a seal 400 is installed in the third installation groove 160.

[0049] In this way, a third installation groove 160 is circumferentially provided along the periphery of the installation opening 150 for installing the seal 400. When the inverter inductor box is installed on the photovoltaic inverter, the connection between the installation opening 150 and the photovoltaic inverter is sealed by the seal 400, enhancing the sealing performance between the photovoltaic inverter and the inverter inductor box. It makes it difficult for moisture, dust or other impurities outside the housing 100 to enter the inverter inductor box and the photovoltaic inverter, reducing the corrosion and damage of moisture, dust and other impurities to the photovoltaic inverter and the inverter inductor box. Moreover, the seal 400 can also enhance the connection tightness between the inverter inductor box and the photovoltaic inverter, making the inverter inductor box less likely to loosen, thereby improving the connection stability between the inverter inductor box and the photovoltaic inverter.

[0050] Optionally, in another embodiment, the material of the seal 400 can be selected in a variety of ways. The seal 400 can be selected as a rubber ring made of rubber, or can be configured as a sealing ring made of polyurethane. It is not limited to this, as long as it can achieve the sealing of the installation opening 150 of the inverter inductor box.

[0051] Please refer to Figures 5 to Figure 6The embodiment of the utility model further provides a photovoltaic inverter, including a box 600 and the inverter inductor box mentioned above, wherein the inverter inductor box can be detachably installed in the box 600. The specific structure of the inverter inductor box refers to the above embodiment. Since the photovoltaic inverter adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0052] Optionally, in one embodiment, a plurality of first connection holes 170 are opened on the installation port, and a plurality of second connection holes 610 are opened on the box body, and one first connection hole 170 corresponds to one second connection hole 610. Both the first connection hole 170 and the second connection hole 610 are used for screws to pass through. The screws pass through the second connection hole 610 and the first connection hole 170 in turn to connect the box body and the inverter inductor box.

[0053] In this way, a plurality of second connection holes 610 are opened on the box body 600, a plurality of first connection holes 170 are opened on the installation opening 150, one second connection hole 610 is set corresponding to one first connection hole 170, and screws are inserted into the second connection holes 610, and then the screws are inserted into the corresponding first connection holes 170, so as to realize the detachable installation of the inverter inductor box on the box body 600 of the photovoltaic inverter. It is convenient to install and remove the inverter inductor box on the box body 600, and to replace and repair the inverter inductor box.

[0054] Optionally, in one embodiment, a plurality of positioning pins 500 are provided on the installation opening 150 and the partition plate 200 , and a plurality of positioning holes 620 for the positioning pins 500 to pass through are opened in the box body 600 , and one positioning pin 500 is correspondingly passed through one positioning hole 620 .

[0055] In this way, a plurality of positioning pins 500 are provided on the installation opening 150 and the partition plate 200, and a plurality of positioning holes 620 for the positioning pins 500 to penetrate are provided on the box body 600. When installing the inverter inductor box on the box body 600, the positioning holes 620 are first aligned with the positioning pins 500, so that each positioning pin 500 is penetrated in the corresponding positioning hole 620, so as to realize the positioning of the inverter inductor box before installation. The first connection hole 170 on the box body 600 and the second connection hole 610 on the inverter inductor box are aligned, so as to improve the installation accuracy and efficiency of the inverter inductor box on the box body 600. When the inverter inductor box is installed on the box body 600, it is not easy to reduce the installation efficiency of the inverter inductor box due to the misalignment of the first connection hole 170 and the second connection hole 610.

[0056] It is understandable that those skilled in the art can, under the guidance of the above embodiments, combine various implementation methods in the above embodiments to obtain technical solutions of multiple implementation methods.

[0057] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An inverter inductor box, characterized in that, Comprising: A housing having a receiving cavity extending along the length direction of the housing; A partition plate disposed on the cavity wall of the receiving cavity, the partition plate extending along the length direction of the housing, and in the length direction of the housing, the partition plate divides the receiving cavity into a first cavity and a second cavity arranged side by side; The housing further includes a plurality of first mounting grooves and a plurality of second mounting grooves disposed in the receiving cavity, the plurality of first mounting grooves are disposed in the first cavity and are spaced along the length direction of the first cavity, the plurality of second mounting grooves are disposed in the second cavity and are spaced along the length direction of the second cavity, and both the first mounting grooves and the second mounting grooves are used for mounting inductors.

2. The inverter inductor box according to claim 1, characterized in that, The inverter inductor box further includes a plurality of reinforcing ribs disposed at the bottom of the partition plate, and the plurality of reinforcing ribs connect the first cavity and the second cavity.

3. The inverter inductor box according to claim 1, characterized in that, The inverter inductor box further includes a heat dissipation member disposed on the side surface of the housing.

4. The inverter inductor box according to claim 3, characterized in that, The heat dissipation member is configured as a plurality of heat dissipation teeth disposed at the bottom of the housing and surrounding the circumference of the housing.

5. The inverter inductor box according to claim 4, wherein, A ventilation groove is formed between the plurality of heat dissipation teeth at the bottom of the housing, the ventilation groove is formed between the outer side walls adjacent to the first cavity and the second cavity, and the bottom wall of the ventilation groove is configured as the bottom of the partition plate.

6. The inverter inductor box according to claim 1, wherein, Thermal conductive glue is provided in both the first cavity and the second cavity, and the thermal conductive glue is used to fill the gaps between the cavity walls of the first cavity and the second cavity and the inductor.

7. The inverter inductor box according to claim 1, characterized in that, At the upper end of the housing, the housing is provided with an installation opening communicating with the receiving cavity, and a third mounting groove is circumferentially provided along the periphery of the installation opening, and a sealing member is installed in the third mounting groove.

8. A photovoltaic inverter, characterized in that, Comprising: A box body; The inverter inductor box according to any one of claims 1 to 7, and the inverter inductor box is detachably installed on the box body.

9. The PV inverter according to claim 8, wherein, A plurality of first connection holes are provided in the installation opening, and a plurality of second connection holes are provided in the box body. One first connection hole corresponds to one second connection hole, and both the first connection holes and the second connection holes are used for screws to pass through. The screws sequentially pass through the second connection holes and the first connection holes to connect the box body and the inverter inductor box.

10. The photovoltaic inverter according to claim 8, characterized in that, A plurality of positioning pins are provided on both the installation opening and the partition plate, and a plurality of positioning holes for the positioning pins to pass through are provided in the box body. One positioning pin corresponds to and passes through one positioning hole.

Images